Yeah, if they're identifying actual soldiers in the U.S. photos, there's no doubt they're authentic.
The question is, did the soldiers do this on their own or were they put up to it? Howard Stern brought up that point this morning (the father of one of the soldiers is hiring a lawyer because he doubts soldiers can do something like this without their superiors' permission). If they did this without permission, they're pretty stupid to photograph it.
